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@adamgordon2020 You're absolutely right that we have to be very skeptical about A/B test "case studies" where absolute numbers are not published. Lots of rubbish tests out there. One vs two-tailed iss…

@dharmesh Dell-sized enterprises tend to have one or more :) For all others it's pretty difficult to establish a trend. Some aggressive startups like Zalando have 80 full-time optimizers on staff (hen…

@StevieHamilton the most important aspect is "how easy is it for the respondents to use this?" There was (well, still is) a user testing software that was so complicated to use that people who were su…